Q4) A 220 V d.c. shunt motor has an armature resistance of 0.5 ohm, and runs at 850 rpm., When taking a full-load current of 32 A, the shunt field resistance is 110 ohms. Calculate the speed at which the motor runs, if (i) 1.5 ohm resister were introduced in series with the armature, (ii) 300 ohms resister were connected in series with the field winding, and load torque remaining the same throughout. Assume that field is proportional to field current. ?
Q4) A 220 V d.c. shunt motor has an armature resistance of 0.5 ohm, and runs at 850 rpm., When taking a full-load current of 32 A, the shunt field resistance is 110 ohms. Calculate the speed at which the motor runs, if (i) 1.5 ohm resister were introduced in series with the armature, (ii) 300 ohms resister were connected in series with the field winding, and load torque remaining the same throughout. Assume that field is proportional to field current. ?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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